UIPickerView 显示与隐藏

最新推荐文章于 2023-12-03 21:32:04 发布

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最新推荐文章于 2023-12-03 21:32:04 发布

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分类专栏： iphone技术文章标签： action button input

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本文介绍了如何在iOS应用中集成并使用UIPickerView控件。通过实例展示了创建UIPickerView、设置代理方法、实现数据源及显示选择指示器的过程。此外还详细解释了如何自定义键盘上的完成按钮，并将其绑定到相关的操作。

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转载自 http://www.devdiv.com/home.php?mod=space&uid=45444&do=blog&id=6238

UIPickerView* pickerView = [[UIPickerView alloc] init];
[pickerView sizeToFit];
pickerView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
pickerView.delegate = self;
pickerView.dataSource = self;
pickerView.showsSelectionIndicator = YES;
self.yourPickerView = pickerView;  //UIPickerView

yourTextField.inputView = pickerView;

// create a done view + done button, attach to it a doneClicked action, and place it in a toolbar as an accessory input view...
// Prepare done button
UIToolbar* keyboardDoneButtonView = [[UIToolbar alloc] init];
keyboardDoneButtonView.barStyle = UIBarStyleBlack;
keyboardDoneButtonView.translucent = YES;
keyboardDoneButtonView.tintColor = nil;
[keyboardDoneButtonView sizeToFit];

UIBarButtonItem* doneButton = [[[UIBarButtonItem alloc] initWithTitle:@"Done"
    style:UIBarButtonItemStyleBordered target:self
    action:@selector(pickerDoneClicked:)] autorelease];

[keyboardDoneButtonView setItems:[NSArray arrayWithObjects:doneButton, nil]];

// Plug the keyboardDoneButtonView into the text field...
yourTextField.inputAccessoryView = keyboardDoneButtonView;  

[pickerView release];
[keyboardDoneButtonView release];